package thread;
/**
 * 互斥锁
 * 当使用多个synchronized锁定多个代码片段，并且指定的锁对象都相同时，这些代码片段都是
 * 互斥的。即：多个线程不能同时执行它们
 *
 */
public class SyncDemo4 {
    public static void main(String[] args) {
        Foo foo = new Foo();
        Thread t1 = new Thread(()->foo.methodA());
        Thread t2 = new Thread(()->foo.methodB());

        t1.start();
        t2.start();
    }
}

class Foo{
    public synchronized void methodA(){
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+"正在执行A方法");
            Thread.sleep(5000);
            System.out.println(t.getName()+"执行A方法完毕");
        }catch (InterruptedException e){
        }
    }

    public synchronized void methodB(){
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+"正在执行B方法");
            Thread.sleep(5000);
            System.out.println(t.getName()+"执行B方法完毕");
        }catch (InterruptedException e){
        }
    }
}